portal/protocols/s5.go

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package protocols
import (
"context"
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"crypto/ed25519"
"fmt"
s5config "git.lumeweb.com/LumeWeb/libs5-go/config"
s5ed "git.lumeweb.com/LumeWeb/libs5-go/ed25519"
"git.lumeweb.com/LumeWeb/libs5-go/encoding"
s5interfaces "git.lumeweb.com/LumeWeb/libs5-go/interfaces"
s5node "git.lumeweb.com/LumeWeb/libs5-go/node"
s5storage "git.lumeweb.com/LumeWeb/libs5-go/storage"
"git.lumeweb.com/LumeWeb/libs5-go/types"
"git.lumeweb.com/LumeWeb/portal/protocols/registry"
"git.lumeweb.com/LumeWeb/portal/storage"
"github.com/spf13/viper"
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bolt "go.etcd.io/bbolt"
"go.uber.org/fx"
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"go.uber.org/zap"
"time"
)
var (
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_ s5interfaces.ProviderStore = (*S5ProviderStore)(nil)
_ registry.Protocol = (*S5Protocol)(nil)
)
type S5Protocol struct {
node s5interfaces.Node
config *viper.Viper
logger *zap.Logger
storage *storage.StorageServiceImpl
identity ed25519.PrivateKey
providerStore *S5ProviderStore
}
type S5ProtocolParams struct {
fx.In
Config *viper.Viper
Logger *zap.Logger
Storage *storage.StorageServiceImpl
Identity ed25519.PrivateKey
ProviderStore *S5ProviderStore
}
type S5ProtocolResult struct {
fx.Out
Protocol registry.Protocol `group:"protocol"`
S5Protocol *S5Protocol
}
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var S5ProtocolModule = fx.Module("s5_api",
fx.Provide(NewS5Protocol),
fx.Provide(NewS5ProviderStore),
)
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func NewS5Protocol(
params S5ProtocolParams,
) (S5ProtocolResult, error) {
proto := &S5Protocol{
config: params.Config,
logger: params.Logger,
storage: params.Storage,
identity: params.Identity,
providerStore: params.ProviderStore,
}
return S5ProtocolResult{
Protocol: proto,
S5Protocol: proto,
}, nil
}
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func NewS5ProviderStore(config *viper.Viper, logger *zap.Logger, storage *storage.StorageServiceImpl) *S5ProviderStore {
return &S5ProviderStore{
config: config,
logger: logger,
storage: storage,
}
}
func InitS5Protocol(s5 *S5Protocol) error {
return s5.Init()
}
func (s *S5Protocol) Init() error {
cfg := &s5config.NodeConfig{
P2P: s5config.P2PConfig{
Network: "",
Peers: s5config.PeersConfig{Initial: []string{}},
},
KeyPair: s5ed.New(s.identity),
DB: nil,
Logger: s.logger.Named("s5"),
HTTP: s5config.HTTPConfig{},
}
pconfig := s.config.Sub("protocol.s5")
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if pconfig == nil {
s.logger.Fatal("Missing protocol.s5 Config")
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}
err := pconfig.Unmarshal(cfg)
if err != nil {
return err
}
cfg.HTTP.API.Domain = fmt.Sprintf("s5.%s", s.config.GetString("core.domain"))
if s.config.IsSet("core.externalPort") {
cfg.HTTP.API.Port = s.config.GetUint("core.externalPort")
} else {
cfg.HTTP.API.Port = s.config.GetUint("core.port")
}
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dbPath := pconfig.GetString("dbPath")
if dbPath == "" {
s.logger.Fatal("protocol.s5.dbPath is required")
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}
_, p, err := ed25519.GenerateKey(nil)
if err != nil {
s.logger.Fatal("Failed to generate key", zap.Error(err))
}
cfg.KeyPair = s5ed.New(p)
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db, err := bolt.Open(dbPath, 0600, nil)
if err != nil {
s.logger.Fatal("Failed to open db", zap.Error(err))
}
cfg.DB = db
s.node = s5node.NewNode(cfg)
s.node.SetProviderStore(s.providerStore)
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return nil
}
func (s *S5Protocol) Start(ctx context.Context) error {
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err := s.node.Start()
if err != nil {
return err
}
identity, err := s.node.Services().P2P().NodeId().ToString()
if err != nil {
return err
}
s.logger.Info("S5 protocol started", zap.String("identity", identity), zap.String("network", s.node.NetworkId()), zap.String("domain", s.node.Config().HTTP.API.Domain))
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return nil
}
func (s *S5Protocol) Name() string {
return "s5"
}
func (s *S5Protocol) Stop(ctx context.Context) error {
return nil
}
func (s *S5Protocol) Node() s5interfaces.Node {
return s.node
}
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type S5ProviderStore struct {
config *viper.Viper
logger *zap.Logger
storage *storage.StorageServiceImpl
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}
func (s S5ProviderStore) CanProvide(hash *encoding.Multihash, kind []types.StorageLocationType) bool {
for _, t := range kind {
switch t {
case types.StorageLocationTypeArchive, types.StorageLocationTypeFile, types.StorageLocationTypeFull:
rawHash := hash.HashBytes()
if exists, upload := s.storage.TusUploadExists(rawHash); exists {
if upload.Completed {
return true
}
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}
if exists, _ := s.storage.FileExists(rawHash); exists {
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return true
}
}
}
return false
}
func (s S5ProviderStore) Provide(hash *encoding.Multihash, kind []types.StorageLocationType) (s5interfaces.StorageLocation, error) {
for _, t := range kind {
if !s.CanProvide(hash, []types.StorageLocationType{t}) {
continue
}
switch t {
case types.StorageLocationTypeArchive:
return s5storage.NewStorageLocation(int(types.StorageLocationTypeArchive), []string{}, calculateExpiry(24*time.Hour)), nil
case types.StorageLocationTypeFile, types.StorageLocationTypeFull:
return s5storage.NewStorageLocation(int(types.StorageLocationTypeFull), []string{generateDownloadUrl(hash, s.config, s.logger)}, calculateExpiry(24*time.Hour)), nil
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}
}
hashStr, err := hash.ToString()
if err != nil {
return nil, err
}
return nil, fmt.Errorf("could not provide hash %s for types %v", hashStr, kind)
}
func calculateExpiry(duration time.Duration) int64 {
return time.Now().Add(duration).Unix()
}
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func generateDownloadUrl(hash *encoding.Multihash, config *viper.Viper, logger *zap.Logger) string {
domain := config.GetString("core.domain")
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hashStr, err := hash.ToBase64Url()
if err != nil {
logger.Error("error encoding hash", zap.Error(err))
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}
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return fmt.Sprintf("https://s5.%s/s5/download/%s", domain, hashStr)
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}